Roller-bearing for railway-trucks



L. K. STAFFORD.

ROLLER BEARING FOR RAILWAY TRUCKS.

APPLICATION F ILED SEPT-6,1919.

Patented Apr. 12, 1921.

2 .IZ IQ 2 7 Leo KUW/d WITNESS:

IN VENTOR.

ATTORNEY.

unrrso srarss rarsur OFFICE.)

LEO K. STAFFORD, OF DETROIT, MICHIGAN, A SSIGNOR TO THE STAFFORD EC BEARING GAR TRUCK CORPORATION, OF CARLSTADT, NEW JERSEY, A P0- BIATIQN NEW JERSEY.

ROLLER-BEARING FOB, RAILWAY-TRUCKS.

Specification of Letters Patent. Patented Apr. 12, 1921.

Application filed September 6, 1919. Serial No. 322,027.

To all to/ 20121275 may concern:

Be it known. that 1, L110 K. STAFFORD, a citizen of the. United States, residing at Detroit, in the county of Wayne and State of lvllichigan, have invented new and useful improvements in Roller-Bearings for Railway-'lrucks, of which the following is a. specification.

This invention has reference to an improvement in truck construction for rolling stock.

The primary object of the invention is to provide the bearing box of a railway truck with anti-frictional means between the box and the spindle or journal of the axle to insure the tree turning of the wheel under all conditions.

A further object of: the invention is to provide a journal box for trucks of the standard construction with antidrictional rollers arranged in a suitable cage and properly spaced and retained from contact with each other, and to provide the journal or spindle of the car axle with a case hardened sleeve on which. the rollers bear. 1

A. further object of the invention is to arrange between the journal box of a standard truck for rolling: stock anti-frictional rollers which are positively held against longitudinal movement, said rollers bearing on nse hardened element-s, one 01"" which sur rounding. and being secured to the journal. or spindle of the axle and the other being wedged or otherwise secured on the journal box, in addition to the provision of means whereby a lubricant may be fed to the roller hearing.

it is a further object of the invention to provide anti-frictional means between the journal box of a. truck and the spindle or journal oi a. car wheel axle which may be applied without alterations to standard, trucks and standard axles.

it is a. still further object oi the invention to provide means for reducing: the triotion between the journal boxes of trucks and the journals or spindles of axles re ceived in said boxes which shall be of a. simple and comparatively cheap construction and which will perform the functions for which it is devised with accuracy, certainty and without danger of Wear or other injury to either the axles or hearing or journal boxes.

Other objects and advantages Will present themselves as the nature of the invention is more fully disclosed, reference being had to the accompanying drawings in which there is exemplified a simple and satisfactory reduction of the improvement to practice, it being understood, however, that the nature of the invention is such as to render the same suseept-ibleto various modifications, all of which falling within the scope of what is claimed.

In the drawings:

Figure 1 is a top plan view of the boxing at one end of an ordinary or standard car truck illustrating certain features of my improvement.

F 2 is a. sectional view approximately on the line 2-2 of Fig. 1.

Fig. 3 is a sectional view approximately on the line 3-3 of Fig. 1.

Fig. is a. sectional view approximately on the line d4.- of Fig. 3.

Fig. is a detail fragmentary perspective view of one of the ring members that forms one end of the for the autbfrictional rollers. 0

Fig. 6 is a detail perspective View looking toward one end of one of the anti; frictional rollers.

' As is well known to those skilled in the art, the axles for the wheels of rolling stock .as well as the boxes on the ends of the trucks which receive the spindles or journals of the said axles, are constructed of cast steel and are not tempered. This is necessary because a slight but determined. amount of yieldability is required between the axles and bosses and were either of these elements tempered the same would be rendered non- .yieldable and consequently liable to breakage.

In carrying out my invention I make use of the standard trucks 7 that have their ends integrally termed with the boxes 8, the bores ot the said boxes being round, and the said here being, indicated in the drawings by the numeral 9. In the bore 91 arrange a case hardened tube 10. Preferably I provide the tube, on its outer periphery with a longitudinally extending rib 11 designed to enter a longitudinal groove 12 which I form in the bore of the boxing. However, it is to be understood that the case hardened steel tube ll) may be secured in the bore in other manners, it being, how-- ever, necessary to retain the tube against both longitudinal and turning movement in the bore.

(in the outer end of the boxing 9 there is arranged a grease chamber 13 that has a ported communication 14 with the bore of the boxing, and. the tube 10 is provided with a number of openings that aline with the ports 14. The grease or lubricant chamlber 1313 has arrangei'l therein a follower plate 15, 16 the me having a ceutrall arranged stem 16 that passes through the removable top 17 of the chamber 13. The top is preferably secured to the chamber by wing nuts 18, but other securing means may be em- 28 played. iihirrouiuling the stem 16, and exerting a pressure between tlu top 1 of the chamber 1 3 and the upper wall of the follower plate is a spring 19. The stem 16 is in the nature of an indicator, and the spring 19 is of a strength to force the follower plate 15 the entire depth of the chamber 12. it will thus be apparent that as the grease between the plate 15 and the lower wall of the chamber 13 is used up 32* the stem 16 will be moved inwardly (although not entirely) in the chamber 13 so that the amount of grease in the chamber is thus readily determined.

The numeral 20 indicates a car or engine a axle which has its ends reduced in the usual manner to provide spindles or journals indicated by the numeral 21. The spindle 21, in the present instance is surrounded by a hareened steel sleeve 22, the inner end Q0 of the said sleeve being slightly flared as at 23 at its point of contact with the shoulder between the axle, and the swindle therefor. The sleeve has its outer end anged inwardly i and has its inner wall provided with tudinally extending rib or key 25 eived in a longitudinally arranged groove :26 in the spindle 21 The anti frictional rollers, which I employ, are indicated by the numerals 2T. w llach of these rollers has its ends provided "with preferably conical depressions 28. The housing for the rollers comprises 'end annular members or rings 29 and 00 respectively. These ri h s, upon their confronting faces and at suitable spaced intervals are provided with inwardly extending substantially coneshaped tips 30 that are designed to be re-' reivcd in the conical depressions 28 of the rollers, and consequently provide stub shafts J or trunnions for the said rollers. Between the rollers the end members of the cage are connected by longitudinally extending bars 31 that may, have their ends riveted, bolted or otherwise connected to the said end memif: hers. The cage rollers are designed to be passed through the entrance opening to the boxing to bring the same in engagement with the case hardened tube 10 and with the case hardened sleeve The cage rollers are limited in their inward movement by contact of the member 30 of the said cage with the flared end 23 of the sleeve 22 and are held against outward longitudinal movement by a stop plate 32. The plate has its lower edge concaved or rounded inwardly as at 33' so that the same is arranged above the plane of the sleeve 22, and the said plate has its upper edge formed with 'a widened head 34 that rests on the top of the boxing S, the plate proper passing through an opening so 35 in the top of the said boxing. On the boxing to the opposite sides of the mass, and adjacent to the ends of the said head there are formed pairs of upstanding ears and 37 respectively. The head 34 is as snugly received between the pairs of cars so that the opening 35 is fully closed and entrance of dust or foreign matter to the bore of the boxing is thus prevented. The head 34 of the plate 32 is pivoted, as at 38 between the ears 36 and is provided with an opening 39 that alines with registering openings in the cars 37. Through these openings pass a suitable fastening element in the nature of a cotter pin or the like which is indicated by the numeral all. The edge of the plate 32 nearest the latching means -10 is rounded inwardly and downwardly as at 4.1 so that when the latching means 40 is removed the plate 32 may be swung outwardly, and when 10: the door 43 of the boxing 8 is swung to open position the cage hearing may be readily re moved after the boxing has been jacked up.

A hooked rod or similar implement may be utilized as the means for removing the cage, 195 the same engaging with the outer end member of the cage for the rollers, and between a pair of said rollers facilitating such removal.

It is thought from the foregoing descri tion, when taken in connection with t e drawings that the simplicity and advantages of my improvement will he understood and appreciated it being noted that the rollers are constantly lubricated by the grease from the grease chamber 13, that the case har dened steel bearing members prevent injury to either the boxing or the axle, and that the caged rollers may be easily and quickly applied between the axle andthe boxing and as readily removed therefrom should occasion require. It'is to be further noted that should any frictional en agement occur between theouter end mem er of the cage and the stop plate 32,'such engagement would have a tendency to hold the plate in its closed position.

Having thus described the invention, what is claimed as new, is

1. In combination with the boxing of the truck of a rolling stock having a round bore provided with a longitudinal groove, of a case hardened steel tube received in the bore, a longitudinal rib on said tube received in said groove, said boxing designed to receive the spindle end of an axle, said spindle having a longitudinal groove, a case hardened steel sleeve having its outer end flanged and provided with an inner longi tudinal rib arranged over the spindle and the said rib being received in the groove of the spindle, caged anti-frictional rollers received in the bore, surrounding the spindle thereof, said bore having a longitudinal groove, a case hardened steel tube received in the bore, a longitudinal rib on said tube received in the groove, said bore designed to receive the spindle end of an axle, a case hardened steel sleeve having its outer end flanged inwardly arranged on the spindle and removably secured thereto, rollers In the groove findin a bearing on the sleeve and tube, said r0 lers having their ends' depressed, a cage comprising end ring mem- .bers having teats received'in the said de' pressions, connecting rods between the ring,

the inner ring having a slight contacting engagement with the inner elid of the sleeve,

and a pivoted sto plate carried by the boxing and dispose opposite the outer ring of the cage to hold the said cage against outward longitudinal movement. 40.

In testimony whereof I affix my signature. LEO K. STAFFQRD. 

